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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (ARTEMIS-1162) Make new Adapting TimedBuffer and old Fixed TimedBuffer configurable
Date Mon, 15 May 2017 08:28:04 GMT

    [ https://issues.apache.org/jira/browse/ARTEMIS-1162?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16010156#comment-16010156
] 

ASF GitHub Bot commented on ARTEMIS-1162:
-----------------------------------------

Github user michaelandrepearce commented on the issue:

    https://github.com/apache/activemq-artemis/pull/1268
  
    @franz1981 and here in lies the issue, that the project doesn't currently have a set of
agreed performance metrics for different end 2 end scenarios, that are run automatically and
reported each release. 
    
    I like micro benchmarks as they help isolate a problem, and quickly test if the changes
look promising and the best we have today.
    
    As we move to look at other perf improvements without the end 2 end scenarios reporting
perf metrics version to version, some changes may start to even step on each other, e.g. one
fix may actually regress another, e.g. the classical, batching can improve throughput very
easily but trades it for latency.
    
    



> Make new Adapting TimedBuffer and old Fixed TimedBuffer configurable
> --------------------------------------------------------------------
>
>                 Key: ARTEMIS-1162
>                 URL: https://issues.apache.org/jira/browse/ARTEMIS-1162
>             Project: ActiveMQ Artemis
>          Issue Type: Improvement
>    Affects Versions: 2.1.0
>            Reporter: Michael Andre Pearce
>             Fix For: 2.2.0
>
>
> New Adapting TimedBuffer was added and replaced existing Fixed TimedBuffer. This could
cause behaviour/performance change of journal IO (and hopefully for the better).
> As this hasn't been run significantly in a real world production environment, to avoid
causing any production deployment issues having unexpected behaviour changes, or to allow
managed rollout and rollback.
> We would like to add back the fixed timed buffer (default), and make it configurable
to the new improved timed buffer. 



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